sleep vs rapid eye movement sleep

rapid eye movement sleep vs sleep

sleep and rapid eye movement sleep both are nouns.

sleep is a verb but rapid eye movement sleep is not a verb.

Word	Noun	Adjective	Verb	Adverb
sleep	Yes	No	Yes	No
rapid eye movement sleep	Yes	No	No	No

As nouns, rapid eye movement sleep is a hyponym of sleep; that is, rapid eye movement sleep is a word with a more specific, narrower meaning than sleep:

sleep: a natural and periodic state of rest during which consciousness of the world is suspended
rapid eye movement sleep: a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep

Other hyponyms of sleep include sleeping, nonrapid eye movement, nonrapid eye movement sleep, NREM, NREM sleep, orthodox sleep, paradoxical sleep, rapid eye movement, REM, REM sleep, shut-eye, shuteye.

sleep (noun)	rapid eye movement sleep (noun)
a natural and periodic state of rest during which consciousness of the world is suspended	a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
euphemisms for death (based on an analogy between lying in a bed and in a tomb)
a torpid state resembling deep sleep
a period of time spent sleeping

sleep (verb)	rapid eye movement sleep (verb)
be asleep
be able to accommodate for sleeping

Difference between sleep and rapid eye movement sleep

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